778849420

素因数分解:

$2^2\times 5^1\times {\mathrm{1663}}^1\times {\mathrm{23417}}^1$

素因数の和:25089

約数の個数: 24

約数和(自身を含む): 1636637184

約数和(自身を除く): 857787764

約数列:

[1, 2, 4, 5, 10, 20, 1663, 3326, 6652, 8315, 16630, 23417, 33260, 46834, 93668, 117085, 234170, 468340, 38942471, 77884942, 155769884, 194712355, 389424710, 778849420]

約数ペア:

[(1, 778849420), (2, 389424710), (4, 194712355), (5, 155769884), (10, 77884942), (20, 38942471), (1663, 468340), (3326, 234170), (6652, 117085), (8315, 93668), (16630, 46834), (23417, 33260)]